Service switch box



sept. 4, 1923.- 1,467,109

H. F. HOLKENBRINK SERVICE SWITCH BOX Filed May 2. 1921 Patented Sept. 4, 1923.

UNITED STATES HENRY F. HOLKENBRNK, OF PORTLAND, OREG-ON.

SERVICE SWITCH BOX.

Application filed May 2,

To all whom t may concern Be it known that I, HENRY F. HOLKEN- DRINK, a citizen otthe United States, andL resident of Portland, in the county ot Mult.- nomah and State ol Oregon, have invented a new and `useful Service Switch Box, ot which the following is a specification.

-This invention relates more particularly to a `means l'or conducting electrical wires trom within a switch box to instruments, or current consuming devices on the outside of said box.`

The objects ol my invention are to provide a means for bringing wires from within aliush box to instruments, etc. on the outside oit' said flush box without. the employment ot any additional pipe or fittings.

I attain these results in the manner described in the following specification and illustrated in the accompanying drawing in which:

Figure l is a trent elevation of my device. Figure Q is a side elevation with a portion broken away in section. Figure 3 `is a plan with the insulated outlet cover removed. Figure Ll. shows a modified term of attachingtlie insulated outlet cover to the door trim.

y Similar numbers of reference reiter to the saine or similar parts throughout the several views.

Referring in detail to the drawing, I have constructed my device on the usual type of service switch box whose sides 4, top and bottom 6 are provided with the usual knockout arcas 7. A. double front 8 at once provides au opening 9 and a stopv 1f) for the door 1l inovided with the usual hinges 12 and a knob 15%, tor keeping the door properly closed. The front S is somewhat larger than the switch box and thereby provides an extending flange about its perimeter:

ln the top 5 l have cut an opening 141 over which is placed a partial box consisting el a baclr` 15, sides 16 and top 17 and a lip ld'which passes down through the opening 14: 'and is preferably spot-welded to the under side of the top 5.

in insulated outlet cover .19 is placed over the open portions thus formed, and wires 2O can readily be passed from meters or other objects desired through the holes 21 in the outlet cover 19 and then down into the switch box to the switches or cutouts as desired. The outlet cover 19 s preferably 1921. serial No. 466,069.

ot insulating material and is attached to the back 15 by means ot the screws 22.

Line 23 represents the face ot the wall behind which the switch box sets and against whichthe door trim 8 rests.

Referring to the outlet cover 19 it will be understood that l' do not desire to limit myselt toa one piece cover ot insulatingmaterial, but may use'` a metallic cover through which are passed separate insulating bushings.

he principal advantages resulting from the use ot this ,device may be briefly listed as follows: The great convenience ot installation caused by the outlet box being part of the switch box and not requiring any pipe or fittings to join the two together.; the

ease with which wires may be passed from a cutout to a meter, etc. is greatly increased owing to the tact that no additional parts are required in the construction; the cost of production is materially reduced, as well as the cost of installation; the device presents an unusually neat appearance and can be installed in new work as well as old with equal ease;

l am aware that switch boxes are in existence from which wires may be carried to the exterior of the box through pipes and littings to a separate outlet cover, which, owing to their cost ot production and installation, I have desired to avoid.

While l have thus illustrated and described my invention it is not my desire to limit myself tothis precise forni or method ot application, but intend. that it shall cover all terms and modilications which tall fairly within the appended claim.

lWhat yl claim as new is:

The combination ot a liush switch box having a front which extends beyond its sides and containing a door and having a rectangular opening cut in its top near said ttront with an outlet compartment secured over said opening consisting of a vertical back whose lower edge turns under the rear ot said opening and is secured thereto 'and having a top extending from said back to the liush line, side members extending from the compartment top to the flush box top, an insulated cover adapted to close said outlet along the flush lineand screws adapted to secure said cover to the back of said com? ',partment.

HENRY F.. HOLKENBRINK. 

